US3644649A - Method of repelling rodents using 2 2'-thiobis(4 6-di-tert.-butylresorcinol) - Google Patents
Method of repelling rodents using 2 2'-thiobis(4 6-di-tert.-butylresorcinol) Download PDFInfo
- Publication number
- US3644649A US3644649A US879559A US3644649DA US3644649A US 3644649 A US3644649 A US 3644649A US 879559 A US879559 A US 879559A US 3644649D A US3644649D A US 3644649DA US 3644649 A US3644649 A US 3644649A
- Authority
- US
- United States
- Prior art keywords
- butylresorcinol
- tert
- thiobis
- rodents
- seeds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241000283984 Rodentia Species 0.000 title abstract description 14
- 238000000034 method Methods 0.000 title description 8
- 230000001846 repelling effect Effects 0.000 title description 3
- 150000001875 compounds Chemical class 0.000 abstract description 15
- 239000005871 repellent Substances 0.000 abstract description 8
- 241000196324 Embryophyta Species 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 230000002940 repellent Effects 0.000 description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 241001465754 Metazoa Species 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 229950011008 tetrachloroethylene Drugs 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 241000699670 Mus sp. Species 0.000 description 4
- 241000209140 Triticum Species 0.000 description 4
- 235000021307 Triticum Nutrition 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 235000014466 Douglas bleu Nutrition 0.000 description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 240000001416 Pseudotsuga menziesii Species 0.000 description 2
- 235000005386 Pseudotsuga menziesii var menziesii Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- PXJJSXABGXMUSU-UHFFFAOYSA-N disulfur dichloride Chemical compound ClSSCl PXJJSXABGXMUSU-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 methylenebis compound Chemical class 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- 208000032484 Accidental exposure to product Diseases 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 241000699693 Peromyscus Species 0.000 description 1
- 231100000674 Phytotoxicity Toxicity 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 241000700157 Rattus norvegicus Species 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 229960001701 chloroform Drugs 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 230000035613 defoliation Effects 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- RBBOWEDMXHTEPA-UHFFFAOYSA-N hexane;toluene Chemical compound CCCCCC.CC1=CC=CC=C1 RBBOWEDMXHTEPA-UHFFFAOYSA-N 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 231100000636 lethal dose Toxicity 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000017066 negative regulation of growth Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000208 phytotoxic Toxicity 0.000 description 1
- 230000000885 phytotoxic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000820 toxicity test Toxicity 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
Definitions
- the compounds can be represented by the formula:
- the thiobis compound (alternatively referred to herein as TDBR) can be prepared by reacting 4,6 di-tert.-butylresorcinol with sulfur chloride in the presence of a solvent.
- suitable solvents are the chlorinated hydrocarbons such as chloroform, tetrachloroethylene, and perchlorethylene.
- Perchlorethylene is preferred because the reactants are soluble in it but not the product. Thus the product is easily crystallized from it.
- the reaction can be conducted at a temperature between about 0 C. and 60 C. (preferably 0 C. to 30 C.) in a period between about 1 and 6 hours at atmospheric pressure.
- the methylenebis compound (alternatively referred to herein as MDBR) can be prepared by reacting 4,6-ditert.-butylresorcinol with formaldehyde in the presence of an inert solvent and a catalyst.
- Suitable solvents include hydrocarbons such as alkanes (e.g. hexane), and aromatics (e.g. benzene and toluene).
- hexane-toluene mixture of solvents is preferred because the reactants are soluble in the toluene, but the product is insoluble in hexane. Accordingly with this mixture, the product is easily recovered.
- Suitable catalysts are the non-oxidizing acid catalysts such as hydrochloric acid, sulfuric acid and boron trifiuoride.
- the reaction can be conducted at a temperature between about 25 C. and about 100 C. in a period between about 1 hour and about 6 hours at atmospheric pressure.
- a compound To be effectively employed as a rodent repellent in many forestry applications, a compound must repel animals but not be harmful to the plants or trees to which it is applied.
- a toxicity test consisting of introducing orally into the rodents a graded series of dosages of toxicant to determine the dosage required to cause death in the animal;
- candidate materials are dissolved or dispersed in a suitable volatile medium (e.g. water, alcohol, acetone) and applied to wheat seeds so that the candidate compound constitutes about 2% by weight of the seeds.
- a suitable volatile medium e.g. water, alcohol, acetone
- These seeds are fed at the rate of 25 seeds per day for three consecutive days to individually caged white-footed deer-mice (Peromysces maniculates).
- the mice also have access to standard laboratory rat food-pellets as a sustaining ration. When untreated seeds are used, or when seeds treated with nonrepellent mixtures are offered, the wheat seeds are totally consumed each day in preference to the rat food-pellets.
- mice In determining the toxicity of these substances, a graded series of doses of a suspension of the test substances in corn oil was introduced orally into the mice.
- the average lethal dose was 1600 mg. of MDBR, or TDBR respectively per kg. of mouse body weight. Values in excess of about 300 mg./kg. can be considered nontoxic for practical purposes.
- Similar tests with rabbits were conducted at concentrations up to 470 mg./kg., with no observed death among the test animals. Thus the compounds are essentially non-toxic to both the mice and the rabbits.
- test compounds were formulated as suspensions at both 1% and 6% concentrations in acetone-water-emulsifier containing 1% Carbopol (a Commercial carboxylic polymer, used as a suspending agent, and to eflect prolonged adherence to the leaves).
- the suspensions were brushed onto the leaves (or sprayed in some cases) of both bean plants and Douglas fir seedlings. No evidence of defoliation or other inhibition of growth was observed in the two weeks following application. (Phytotoxic chemicals generally produce loss of leaves, wilting and other signs of distress in less than 1 week).
- repellent Since the purpose of these compounds is to function as a repellent, the precise concentration to be used may vary considerably. The presence of repellent on one leaf can by odor or other subtle method offer protection to a neighboring untreated leaf. The amount required may similarly be affected by other factors affecting the biological sensitivity of the mice. It is known, that starving animals will often ingest materials which otherwise would be repulsive to them. Protection under such cases might require very high concentrations of repellent.
- the compounds can be applied to the seed, seedling, mature plant or tree with the conventional carriers (liquid or powder). Only a minor but elfective amount is required which will depend on the type of foliage and rodent to be repelled, but can easily be determined.
- the process of the invention is broadly a method for protecting vegetable organisms or plant life from rodents comprising treating said organisms with a minor but efiective amount of a compound of this invention.
- a method of protecting plant life from rodents comprising applying to said plant life," a' rodent repelling amount of a compound of the formula:
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
RODENT REPELLENTS 2,2''-METHYLENEBIS(4,6-DI-TERT.-BUTYLRESORCINOL) AND 2,2''-THIOBIS(4,6-DI-TERT.-BUTYLRESORCINOL), OF WHICH THE LATTER IS A NOVEL COMPOUND ARE TAUGHT.
Description
United States Patent 3,644,649 METHOD OF REPELLING RODENTS USING 2,2- THIOBIS(4,6-DI-TERT.-BUTYLRESORCINOL) Charles H. Fuchsman, Cleveland Heights, Ohio, assignor to Ferro Corporation, Cleveland, Ohio No Drawing. Filed Nov. 24, 1969, Ser. No. 879,559 Int. Cl. A01n 9/00, 9/12 U.S. Cl. 424337 1 Claim ABSTRACT OF THE DISCLOSURE This invention relates to compounds useful as rodent repellents, a method for their application, and a novel compound. I
The compounds can be represented by the formula:
wherein X is CH or S. Encompassed within the above formula are the compounds 2,2 methylenebis(4,6-ditert.-butylresorcinol) and 2,2 thiobis(4,6 di-tert.-butylresorcinol) of which the latter is novel.
The thiobis compound (alternatively referred to herein as TDBR) can be prepared by reacting 4,6 di-tert.-butylresorcinol with sulfur chloride in the presence of a solvent. Exemplary of suitable solvents are the chlorinated hydrocarbons such as chloroform, tetrachloroethylene, and perchlorethylene. Perchlorethylene is preferred because the reactants are soluble in it but not the product. Thus the product is easily crystallized from it. The reaction can be conducted at a temperature between about 0 C. and 60 C. (preferably 0 C. to 30 C.) in a period between about 1 and 6 hours at atmospheric pressure.
The methylenebis compound (alternatively referred to herein as MDBR) can be prepared by reacting 4,6-ditert.-butylresorcinol with formaldehyde in the presence of an inert solvent and a catalyst. Suitable solvents include hydrocarbons such as alkanes (e.g. hexane), and aromatics (e.g. benzene and toluene).
A hexane-toluene mixture of solvents is preferred because the reactants are soluble in the toluene, but the product is insoluble in hexane. Accordingly with this mixture, the product is easily recovered. Suitable catalysts are the non-oxidizing acid catalysts such as hydrochloric acid, sulfuric acid and boron trifiuoride.
The reaction can be conducted at a temperature between about 25 C. and about 100 C. in a period between about 1 hour and about 6 hours at atmospheric pressure.
The following examples illustrate the preparation of the compounds. All percentages employed therein and elsewhere in this specification are by weight.
EXAMPLE 1 Preparation of 2,2-methylenebis(4,6-ditert.-butylresorcinol) Into a 500 ml. reaction flask fitted with a thermometer, and reflux condenser was charged 22.2 g. of 4,6-di-tert.- butylresorcinol (0.1 mole), 200 ml. of heptane, 100 ml. of toluene and ml. of concentrated hydrochloric acid. The mixture was warmed to 60 C. with good agitation. Formaldehyde (5.0 ml. of a 37% aqueous solution) was then slowly added over a period of 15 minutes. A mildly exothermic reaction was noted. The mixture was agitated at 70 C. for 1 hour and then cooled in an ice bath. The white crystalline product, after being filtered and washed with heptane, was dried under reduced pressure in a vacuum oven at 60 C. to produce 13.0 g. (57% yield) of 2,2-methylenebis(4,6-di-tert.-butylresorcinol).
EXAMPLE 2 Preparation of 2,2-thiobis(4,6-di-tert.- butylresorcinol) Into a 250 ml. reaction flask fitted with a thermometer and reflux condenser was charged 4,6 di-tert.-butyl resorcinol (22.2 grams) and perchlorethylene (60 ml.). Sulfur chloride (5.1 g. S01 was then slowly added while agitating the mixture. When of the SCl was added, a solid separated and 20 ml. of perchlorethylene was added to facilitate agitation. The mixture was further agitated at 25 C. for one hour and then cooled to 5 C. After filtration the precipitate was washed with heptane and dried to produce 10.0 g. of 2,2-thiobis(4,6-di-tert.- butylresorcinol); M.P. 21415 C.
To be effectively employed as a rodent repellent in many forestry applications, a compound must repel animals but not be harmful to the plants or trees to which it is applied.
In many cases, particularly in forestry applications, it is desirable to keep the rodents from consuming seeds and seedlings. It is, however, undesirable to destroy the rodents, to avoid severe upset of the biological balance in the forests.
This requirement imposes a number of restrictions on a substance to be suitable for use as non-toxic rodentrepellents in the protection of vegetation:
(1) They must repel rodents (and if possible other animals which consume seeds, seedlings and growing plants. e.g. deer);
(2) They must not be dangerously toxic to these animals,
in the event of accidental ingestion;
(3) They must not significantly harm the plants they are intended to protect.
Tests devised to judge these properties include the following:
(1) A repellency test based on a measure of the tendency of rodents to forego favored foods when the latter are coated with the repellents;
(2) A toxicity test consisting of introducing orally into the rodents a graded series of dosages of toxicant to determine the dosage required to cause death in the animal;
(3) An observation of the response of Douglas fir seedlings (illustrative species of valuable evergreen forest trees) and of bean plants (illustrative of broad-leaved annual low growing plants), to having their leaves coated with the repellent substance. Failure in any of these respects would disqualify these substances for their intended use.
In the repellency tests, candidate materials are dissolved or dispersed in a suitable volatile medium (e.g. water, alcohol, acetone) and applied to wheat seeds so that the candidate compound constitutes about 2% by weight of the seeds. These seeds are fed at the rate of 25 seeds per day for three consecutive days to individually caged white-footed deer-mice (Peromysces maniculates). The mice also have access to standard laboratory rat food-pellets as a sustaining ration. When untreated seeds are used, or when seeds treated with nonrepellent mixtures are offered, the wheat seeds are totally consumed each day in preference to the rat food-pellets.
.When wheat seeds were coated with MDBR, 78% of the seeds offered remained unconsumed. When wheat seeds were coated with TDBR, 40% of the seeds offered were rejected.
In determining the toxicity of these substances, a graded series of doses of a suspension of the test substances in corn oil was introduced orally into the mice. The average lethal dose was 1600 mg. of MDBR, or TDBR respectively per kg. of mouse body weight. Values in excess of about 300 mg./kg. can be considered nontoxic for practical purposes. Similar tests with rabbits were conducted at concentrations up to 470 mg./kg., with no observed death among the test animals. Thus the compounds are essentially non-toxic to both the mice and the rabbits.
To test for foliar phytotoxicity, test compounds were formulated as suspensions at both 1% and 6% concentrations in acetone-water-emulsifier containing 1% Carbopol (a Commercial carboxylic polymer, used as a suspending agent, and to eflect prolonged adherence to the leaves). The suspensions were brushed onto the leaves (or sprayed in some cases) of both bean plants and Douglas fir seedlings. No evidence of defoliation or other inhibition of growth was observed in the two weeks following application. (Phytotoxic chemicals generally produce loss of leaves, wilting and other signs of distress in less than 1 week).
Since the purpose of these compounds is to function as a repellent, the precise concentration to be used may vary considerably. The presence of repellent on one leaf can by odor or other subtle method offer protection to a neighboring untreated leaf. The amount required may similarly be affected by other factors affecting the biological sensitivity of the mice. It is known, that starving animals will often ingest materials which otherwise would be repulsive to them. Protection under such cases might require very high concentrations of repellent.
It is therefore necessary to determine empirically for any given situation theamount 0t r epellent required, and optimum method of distributing it among the plants to be protected.
The compounds can be applied to the seed, seedling, mature plant or tree with the conventional carriers (liquid or powder). Only a minor but elfective amount is required which will depend on the type of foliage and rodent to be repelled, but can easily be determined. Ac cordingly the process of the invention is broadly a method for protecting vegetable organisms or plant life from rodents comprising treating said organisms with a minor but efiective amount of a compound of this invention.
What is claimed is:
1. A method of protecting plant life from rodents comprising applying to said plant life," a' rodent repelling amount of a compound of the formula:
(3 C ia):
JEROME D. GOLDBERG, Primary Examiner A. J. ROBINSON, Assistant Examiner
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87955969A | 1969-11-24 | 1969-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3644649A true US3644649A (en) | 1972-02-22 |
Family
ID=25374385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US879559A Expired - Lifetime US3644649A (en) | 1969-11-24 | 1969-11-24 | Method of repelling rodents using 2 2'-thiobis(4 6-di-tert.-butylresorcinol) |
Country Status (1)
Country | Link |
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US (1) | US3644649A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3726928A (en) * | 1969-11-24 | 1973-04-10 | Ferro Corp | 2,2{40 -thiobis(4,6-di-tert.-butylresourcinol) |
US4055539A (en) * | 1974-09-16 | 1977-10-25 | Ciba-Geigy Corporation | Alkylidene-bisphenols containing sulphur, and their use as stabilizers |
-
1969
- 1969-11-24 US US879559A patent/US3644649A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3726928A (en) * | 1969-11-24 | 1973-04-10 | Ferro Corp | 2,2{40 -thiobis(4,6-di-tert.-butylresourcinol) |
US4055539A (en) * | 1974-09-16 | 1977-10-25 | Ciba-Geigy Corporation | Alkylidene-bisphenols containing sulphur, and their use as stabilizers |
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